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Key load indicators and load variability in professional soccer players: a full season study.
- Source :
- Research in Sports Medicine; May/Jun2023, Vol. 31 Issue 3, p201-213, 13p, 1 Chart, 2 Graphs
- Publication Year :
- 2023
-
Abstract
- The aims of this study were to 1) determine the key load indicators in professional soccer through principal component analysis (PCA); and 2) analyse the load variability of each training and match day within the microcycle considering the principal components. Data from 111 load variables were collected using tracking systems in both training and match days (MD). The results showed that 7 variables, which belonged to the first two components of the PCA, explained 80.3% of total variance. Specifically, these variables were Metabolic power, total of steps, Fourier transform (FFT) duration, deceleration distance covered (2–3 m/s<superscript>2</superscript>), total of running actions (12–18 km/h; 21–24 km/h), and distance covered (6–12 km/h). Regarding the analysis of the load variability of each training and match day within the microcycle, the lowest load variability was observed in −1MD. Also, a great load variability in +1MD with significant differences compared to −5MD (p<0.001; d=0.49) and −4MD (p=0.01; d=0.26) was found. This study suggests the use of the PCA in the context of team sports to reduce the large number of variables, which are daily managed by strength and conditioning coaches, in addition to the analysis of load variability of each training and match day within the microcycle. [ABSTRACT FROM AUTHOR]
- Subjects :
- SOCCER
ENERGY metabolism
GLOBAL Positioning System
RUNNING
GAIT in humans
MULTIVARIATE analysis
ONE-way analysis of variance
PHYSICAL training & conditioning
ACCELEROMETERS
QUANTITATIVE research
PHYSIOLOGICAL effects of acceleration
EXERCISE intensity
BODY movement
FACTOR analysis
RESEARCH funding
DESCRIPTIVE statistics
BIOMECHANICS
SPORTS events
ATHLETIC ability
DATA analysis software
LONGITUDINAL method
SPRINTING
Subjects
Details
- Language :
- English
- ISSN :
- 15438627
- Volume :
- 31
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Research in Sports Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 163388981
- Full Text :
- https://doi.org/10.1080/15438627.2021.1954517